ML18136A190
| ML18136A190 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 11/13/1979 |
| From: | Stallings C VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7911160526 | |
| Download: ML18136A190 (8) | |
Text
e VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND,VIRGINIA 23261 November 13,.1979 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation Attn:
Mr. Albert Schwencer, Chief Operating Reactors Branch No. 1 Division of Operating Reactors U. S. Nuclear Regul'atory Commission Washington, D. C.
20555
Dear Mr. Denton:
SURRY POWER STATION FIRE PROTECTION MODIFICATIONS Serial No. 354E/061478 PO/SWB:smv Docket Nos:
License Nos:
50-280 50-281 DPR-32 DPR-37 We have received and reviewed your clarification to Amendment Nos. 54 and 53 to Operating License Nos. DPR-32 and DPR-37 for the Surry Power Station, Unit Nos. 1 and.2, contained in your letter of October 29, 1979.
This clarifica-tion was provided in response to our letter of October 15, 1979.
As requested, Attachment design descriptions and Evaluation Report.
(1) indicates the anticipated submittal dates of additional information as required by the Safety In regard to the commitment dates established by our letter of September 7, 1979, we wish to emphasize that these dates did not consider submittal or NRG approval of any further design details prior to implementation.
However, we desire and are attempting to meet these dates.
In this pursuit we will be implementing modifications on a risk basis as we have already done with Unit 2 Containment Dry Standpipe System -
Item 3.1.18 (6).
However, on certain modifications we will wait for NRG approval prior to implementation because of the cost of rework and possible differences of opinion on how to accomplish a modification.
These modifications will be identified when the design infor-mation is submitted.
The effect of this review on the completion dates of the affected modifications cannot be determined at this time and will depend on the NRG review time and the depth of information required.
We make this point only to inform you of the possibility of the additional review imposed on an already optimistic schedule causing the completion date of certain modifica-tions to extend past a commitment date.
Attachment (2) is a Project Status Summary for your information.
In addition design tions are attached per your request.
of the fire protection modifications descriptions of three (3) modifica-lp
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7911Ht'O 57-G
e VIRGINIA ELECTRIC AND POWER COMPANY TO Mr. Harold Status reports will be issued approximately monthly for your review.
The next report will be transmitted December, 1979.
SWB/smv:2Fl Attachments cc:
Mr. James P. O'Reilly, Director Office of Inpsection and Enforcement Region II I
Very truly yours, z;. ff/.,dlatt:~,.;/
C. M. Stallings Vice President - Power Supply And Production Operations
3.1. 2 3.1.3 3.1.4 3.1.5 3.1.9 3.1.10 3.1.11
- 3. l.15A 3.1.15B 3.1.16 3.1.18 3.1. 22 3.1. 23 3.L25 3.1. 26 3.1. 27 3.1.29 ATTACHMENT (1)
DESIGN DESCRIPTION SUBMITTAL DATES ITEM Air Flow Detectors Breathing Apparatus Cable Tray Covers Safe Shutdown Circuitry Fire Detection Systems Fire Barriers Fir:e Doors Floor Drains, Dikes Oil Collection System Gas Suppression Systems
. Hose Stations Valve Supervision Monitoring Panels Safe Shutdown*
- Water Suppression System Ventilation System Water Spray Shields DATE 1/80 1/80 3/80 7 /80 10/80 8/80 5/80 1/80 11/79 9/80 5/80 12/79 9/80
. 2/81 8/80 11/79..
5/80
ATTACHMENT (2)
(
SURRY POWER STATION FIRE PROTECTION MODIFICATIONS PROJECT STATUS
SUMMARY
Modifications MODIFICATIONS SCHEDULE AND STATUS "Item No. I Descriptions q 7q 10i19 II 79 12/79 OJ/80 02/80 01 80 0418()
n, 80 06/80 07 80 08/80 9/80 10/ 80 11 *~n 1 ?/81 3.1. l Administrative Controls 3.1.2 Air FloY Detectors 3.1.3 Breathing Apparatus 3.1. 4 Cable Tray Covers J.1. 5 Snfo Shutdown Circuitry 3.1. 6 Comhustibles 3.1. 7 Charcoal Filters
- 3. I.8 Emergency Lighting
- !,.,,.,.m J. l. 9 Fire Detection Systems J.1.10 nre Barriers 3.1. 11 Fire Doors 3.1. 12 Fire Dampers
- 3. 1.13 Fire Extinguishers
- 3. 1.14 Fire Ladder 11,WII. :11;!1"111 3, l. lSA Floor Drains, Dikes 11111,1:.,
3.l.l5ll Oil Collection Systems---*-**-
I
). l.16 Gas Suppression Systems J. l.17 Hose Nozzles J.1.18 Hose Stations IDililiilIDIIll*r.llill:1mmmmlll !llilillllIIIlliIIllll (j
- 3. l.19 Hydrogen Lines 3, !. 20 Hose Foam Carts
- 3. !. 21 Hydrants o!JIUlillliliillillJI 3.1. 22 Valve Supervision.. ******--
3, !. 23 Monitoring Panels *-------*
J. I. 24 Penetrations 3.1. 25 Safe Shutdown
- 3. l. 26
- water Suppression Systems 3.1. 27
- 3. l. 28 3.1. 29
). I. 30 3.2.1 J.2.2 3.2.3 3.2.4
- 3. 2. 5 Ki::Y Ventilation System Fire Detection System Power Water Spray Shields Technical Spcdflcntiona Auxiliary Boil,;r Room F_ire Dampers Safe Shutdown Charcoal Filter Hazard In-S ltu Testing I, Beginning of bar represents project atart date.
- 2.
"*1d of h,H r~1'rcscnta project tnrg,:,t coinplction Jatc.
3, Shaded portion represents percent complete, 4,
Absence of block indicates project has not been started,
- 5.
Asterisk* indicates the date of co~plete submittal of required information.
6, Delta /:, indicates the date of partfol submittal of required information."
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- 51 ISSUE DATE:
11-8-79
- 3. l.15B ATTACHMENT (3)
REACTOR COOLANT PUMP MOTOR OIL COLLECTION SYSTEM The collection system consists of leakproof pans under oil bearing components of the reactor coolant motor that may leak.
Covers are provided to contain oil from leaks in pressurized lines and to keep foreign matter out of the drain.
The oil bearing components that require oil collection enclosures are:
Oil lift pump (pressurized lines)
Oil cooler (pressurized lines and housing)
Oil level indicators Oil fill and drain, points Flanged connections for the lower oil reservoir Sight glasses All flanged oil bearing connections Each of the oil collection enclosures are connected to a header with a flexible hose and the header pipe drains the oil to a tank below the enclosures.
The tank will be equipped with a drain and a vent with a* flame arrestor.
- Also, each tank will be seismically supported.
The tanks will be located so the oil can be easily removed such that the collection system can be used for routine draining of the oil for maintenance.
~
The conceptual design for the oil collection enclosures are shown by DWG No *.
5251-M-2001.
The predominant material for the enclosures will be 16 gauge, type 304 stain-less steel.
Ports or latches will be provided for quick access to drain valves,. sight glasses, pressure switches, etc.
For ease of maintenance all assembly hardware will be captive and of the quick release fastener type where practical.
Enclosures will be supported by drilling and/or taping motor flanges, support members, or by using existing bolting.
The number of pieces will be minimized and the size and weight of each piece will be such that they can be easily handled.
The enclosures will be sized to prevent interference with the motor air ventilation.
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r 3.1.18 (6) 3.1. 27 e
e CONTAINMENT DRY STANDPIPE SYSTEM The present fire protection system inside the containment con-sists of portable fire extinguishers.
It is necessary to install a dry standpipe system in* both containments to ensure total fire protection coverage of all accessible areas.
The new fire prote~tion piping will be routed from an existing 4 in. fire protection line at el 28 ft 6 in~ in the a~xiliary building.
A 4 in. pipe will be routed in the auxiliary build-ing-to the penetration area.
A locked closed valve outside the containment and a check valve inside the containment provide containment isolation.
Once inside the containment, the piping will be routed in the annulus area and. run tb each of the four elevations where a total of 13 hose racks will be_installed; 3 hose racks on el -27ft. 7 in., 3 at -3 6 in., 3 at 18 ft. 4 in., and_ 4 hose rack_s at elevation 47_ ft.
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The attached..
sketch depicts* -the 'arrangement - of - the.. contairurient *. standpipe system.
VENTILATION SYSYTEM The exhaust ducts from the cubicles of the volume control tanks, containment* vacuum pumps, sampling coolers and sinks,_
process vent blower, gaseous waste disposal system and recom-biner are to be disconnected from the auxiliary building central area exhaust system.
This will leave only the charging pump cubicle exhaust on the central area exhaust system.
VEPCO letter serial no. 045B/020/79 (August 9,_ 1979) describes the ventilation syst~m modification.
Attachment III of the letter *contains a system description and a flow diagram of the modification.
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